Article(id=1322158313530311492, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322158299525530318, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1724428800000, receivedDateStr=2024-08-24, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1793156706459, onlineDateStr=2026-10-28, pubDate=1753372800000, pubDateStr=2025-07-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793156706459, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793156706459, creator=13701087609, updateTime=1793156706459, updator=13701087609, issue=Issue{id=1322158299525530318, tenantId=1146029695717560320, journalId=1225396423026438145, year='2025', volume='45', issue='7', pageStart='1', pageEnd='280', issueExtLink='null', onlineDate='null', pubDate='1753372800000', pubDateStr='2025-07-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793156703120, creator='13701087609', updateTime=1793158832445, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322167230608028625, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322158299525530318, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322167230608028626, tenantId=1146029695717560320, journalId=1225396423026438145, issueId=1322158299525530318, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=51, endPage=62, ext={EN=ArticleExt(id=1322158313740026693, articleId=1322158313530311492, tenantId=1146029695717560320, journalId=1225396423026438145, language=EN, title=Study on Ore Rock Block Size and Energy Dissipation of Secondary Crushing in Pulang Copper Mine, columnId=null, journalTitle=Mining Research and Development, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The large blocks of ore rocks with a size exceeding 1.2 m generated during the natural caving mining method of Pulang Copper Mine have caused problems of equipment blockage and increased costs. To address these problems, the block size distribution and energy distribution characteristics of secondary crushing for three typical large ore rocks under different numbers of blast holes were analyzed in detail using finite element numerical simulation. Firstly, the block size distribution data of ore rocks were obtained through image processing and field measurement, and the ore rocks were classified. Secondly, finite element software was used to simulate the evolution of blasting stress, crack propagation, and energy dissipation. The results show that the number of blast holes has a significant effect on the crushing efficiency of large ore rocks. With the increase in the number of blast holes, the stress distribution within the rock becomes more uniform, and the crushing effect is enhanced. When the number of blast holes is the same, the three typical large ore rocks are subjected to similar blasting load pressures at the same distance from the blast holes. The blasting load pressure decays rapidly with the increase of the distance from the blast holes. During multi-hole blasting, the stress value on the central line of two-hole distribution is the maximum, while that on the central line of three-hole distribution is the minimum. With the increase in the number of blast holes, the number of cracks correspondingly increases, forming longer cracks or a more extensive crack network in the ore rock. Moreover, multi-hole blasting creates directional cracks or crack zones. After multi-hole blasting, the block size distribution characteristics of the ore rock are uniform and well-crushed. The number of blast holes is directly proportional to the maximum values of kinetic energy and internal energy. Under the condition of the same number of blast holes, the internal energy of ore rocks of various sizes remains stable, and the ratio of kinetic energy to internal energy of the rock decreases with the increase of the size of large ore rocks. Therefore, in the secondary crushing construction of rocks at Pulang Copper Mine, single-hole blasting can be used for small-sized large ore rocks, while double-hole blasting is suitable for medium-sized and large-sized large ore rocks.
, authors=Zaichun WAN
1, Qingtian ZENG
2, Heng HUANG
3, Zhiju LI
3, authorsList=Zaichun WAN, Qingtian ZENG, Heng HUANG, Zhiju LI, authorCompany=null, correspAuthors=null, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322158318487978866, articleId=1322158313530311492, tenantId=1146029695717560320, journalId=1225396423026438145, language=CN, title=普朗铜矿二次破碎的矿岩块度与能量耗散研究, columnId=1226462294490657775, journalTitle=矿业研究与开发, columnName=采矿与矿山充填, runingTitle=null, highlight=null, articleAbstract=
为解决普朗铜矿自然崩落法开采中产生的尺寸超过1.2 m的大块矿岩导致设备堵塞、成本增加的问题,借助有限元数值模拟方法,详细分析了不同炮孔数目下3种典型大块矿岩二次破碎的块度分布及能量分布特征。首先,通过图像处理与现场测量获取了矿岩的块度分布数据,并对矿岩进行分类。其次,利用有限元软件模拟爆破应力演化、裂纹扩展和能量耗散。结果表明,不同炮孔数目对大块矿岩的破碎效果有显著影响。随着炮孔数目的增加,岩石内部应力分布更均匀,破碎效果增强。炮孔数目相同时,3种典型大块矿岩在距离炮孔相同距离时受到相近的爆炸荷载压力。爆炸荷载压力随着与炮孔距离的增加而迅速衰减。多孔爆破时,两孔分布中心线上的应力值最大,三孔分布中心线上的应力值最小。随着炮孔数目的增加,裂纹数量相应增加,并在矿岩中形成更长的裂纹或更广泛的裂纹网络,且多孔爆破形成定向裂纹或裂纹带。多孔爆破后的矿岩块度分布特征表现为均匀且破碎。炮孔数目与动能和内能的最大值成正比,相同炮孔数目条件下,各尺寸矿岩内能保持稳定,岩石的动能和内能之比随着大块矿岩尺寸的增加而降低。因此,在普朗铜矿岩石二次破碎施工中,小型大块矿岩可采用单孔爆破,中型和大型大块矿岩可采用双孔爆破。
, authors=万再春
1, 曾庆田
2, 黄恒
3, 李志钧
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1, address=
1.Yunnan Copper Co., Ltd., Kunming, Yunnan 650033, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322158319461057408, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, authorId=1322158319238759293, language=CN, stringName=万再春, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.云南铜业股份有限公司,云南 昆明 650033, bio={"content":"
万再春(1981—),男,云南保山人,高级工程师,主要从事采矿技术及管理技术研究。E-mail:7794591@qq.com
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万再春(1981—),男,云南保山人,高级工程师,主要从事采矿技术及管理技术研究。E-mail:7794591@qq.com
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2.Xizang Jinlong Mining Co., Ltd., Lhasa, Xizang 859200, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322158320002122629, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, authorId=1322158319746270082, language=CN, stringName=曾庆田, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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2.西藏金龙矿业有限公司,西藏 拉萨 859200, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322158318936769398, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, xref=2., ext=[AuthorCompanyExt(id=1322158318953546615, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, companyId=1322158318936769398, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.西藏金龙矿业有限公司,西藏 拉萨 859200)])]), Author(id=1322158320094397319, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322158320203449225, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, authorId=1322158320094397319, language=EN, stringName=Heng HUANG, firstName=Heng, middleName=null, lastName=HUANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.Yunnan Diqing Nonferrous Metals Co., Ltd., Diqing Tibetan Autonomous Prefecture, Yunnan 674408, China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322158320283141002, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, authorId=1322158320094397319, language=CN, stringName=黄恒, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.云南迪庆有色金属有限责任公司,云南 迪庆藏族自治州 674408, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322158319041627001, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, xref=3., ext=[AuthorCompanyExt(id=1322158319058404218, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, companyId=1322158319041627001, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3.云南迪庆有色金属有限责任公司,云南 迪庆藏族自治州 674408, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322158319041627001, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, xref=3., ext=[AuthorCompanyExt(id=1322158319058404218, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, companyId=1322158319041627001, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Block size distribution of natural caving in Pulang Copper Mine, figureFileSmall=2PHq8ncHw+WZRfPTF0z2Rw==, figureFileBig=CVlCTv2NQw409yfRGDJDdA==, tableContent=null), ArticleFig(id=1322158321541432217, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=图1, caption=
普朗铜矿自然崩落块度分布, figureFileSmall=2PHq8ncHw+WZRfPTF0z2Rw==, figureFileBig=CVlCTv2NQw409yfRGDJDdA==, tableContent=null), ArticleFig(id=1322158321772118938, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Fig.2, caption=
Numerical calculation model for secondary crushing of typical large ore rocks, figureFileSmall=uUrHqWyA9XmIbCtYheDjcQ==, figureFileBig=y4fBUg85w5cliYZ3JJfLkw==, tableContent=null), ArticleFig(id=1322158321847616411, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=图2, caption=
典型大块矿岩二次破碎数值计算模型, figureFileSmall=uUrHqWyA9XmIbCtYheDjcQ==, figureFileBig=y4fBUg85w5cliYZ3JJfLkw==, tableContent=null), ArticleFig(id=1322158321948279708, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Fig.3, caption=
Numerical simulation results of stress evolution during secondary crushing of three typical large ore blocks, figureFileSmall=dnhYAJpJgzfFlOHRx0CnQg==, figureFileBig=l25IuxyWlBvQwbggu9FgKQ==, tableContent=null), ArticleFig(id=1322158322044748701, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=图3, caption=
3种典型大块矿岩二次破碎应力演化数值模拟结果, figureFileSmall=dnhYAJpJgzfFlOHRx0CnQg==, figureFileBig=l25IuxyWlBvQwbggu9FgKQ==, tableContent=null), ArticleFig(id=1322158322145411998, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Fig.4, caption=
Pressure time-history curves during secondary crushing of three typical large ore rocks, figureFileSmall=QqgR1SZL7FBqa+vXJDYAuA==, figureFileBig=dL9C7Ld+xTdOqCtx2K6ptg==, tableContent=null), ArticleFig(id=1322158322220909471, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=图4, caption=
3种典型大块矿岩二次破碎压力时程曲线, figureFileSmall=QqgR1SZL7FBqa+vXJDYAuA==, figureFileBig=dL9C7Ld+xTdOqCtx2K6ptg==, tableContent=null), ArticleFig(id=1322158322292212640, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Fig.5, caption=
Numerical simulation results of crack evolution during secondary crushing of three typical large ore rocks, figureFileSmall=ktcV+JQsO8/P5XGvG9Mm9g==, figureFileBig=LDGfeFeuT8NLkEHG5Q4Akw==, tableContent=null), ArticleFig(id=1322158322371904417, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=图5, caption=
3种典型大块矿岩二次破碎裂纹演化数值模拟结果, figureFileSmall=ktcV+JQsO8/P5XGvG9Mm9g==, figureFileBig=LDGfeFeuT8NLkEHG5Q4Akw==, tableContent=null), ArticleFig(id=1322158322459984802, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Fig.6, caption=
Energy dissipation laws during secondary crushing of three typical large ore rocks, figureFileSmall=GorQfpgy/FJalZ4z6onwkg==, figureFileBig=/uqU39DwL17fxadjBO010Q==, tableContent=null), ArticleFig(id=1322158322548065187, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=图6, caption=
3种典型大块矿岩二次破碎能量耗散规律, figureFileSmall=GorQfpgy/FJalZ4z6onwkg==, figureFileBig=/uqU39DwL17fxadjBO010Q==, tableContent=null), ArticleFig(id=1322158322644534180, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Fig.7, caption=
Characteristics of block size distribution during secondary crushing of three typical large ore blocks, figureFileSmall=E2APz9sRkKqPLrUQK4HrRA==, figureFileBig=gCIs9enIP7oi+lZmbdb3Cg==, tableContent=null), ArticleFig(id=1322158322745197477, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=图7, caption=
3种典型大块矿岩二次破碎块度分布, figureFileSmall=E2APz9sRkKqPLrUQK4HrRA==, figureFileBig=gCIs9enIP7oi+lZmbdb3Cg==, tableContent=null), ArticleFig(id=1322158322858443686, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Table 1, caption=
Typical size of large ore rocks in Pulang Copper Mine
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分界线 | 小型大块矿岩/mm | 中型大块矿岩/mm | 大型大块矿岩/mm |
|---|
| 短轴 | 1 691 | 2 123 | 2 353 |
| 中轴 | 2 414 | 2 773 | 2 997 |
| 长轴 | 2 919 | 3 259 | 3 707 |
), ArticleFig(id=1322158322963301287, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=表1, caption=
普朗铜矿典型大块矿岩尺寸
, figureFileSmall=null, figureFileBig=null, tableContent=
| 分界线 | 小型大块矿岩/mm | 中型大块矿岩/mm | 大型大块矿岩/mm |
|---|
| 短轴 | 1 691 | 2 123 | 2 353 |
| 中轴 | 2 414 | 2 773 | 2 997 |
| 长轴 | 2 919 | 3 259 | 3 707 |
), ArticleFig(id=1322158323114296232, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Table 2, caption=
Main rock mechanics parameters of Pulang Copper Mine
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度/(g/cm3) | 纵波速度/(m/s) | 弹性模量/GPa | 泊松比 | 单轴抗压强度/MPa | 抗拉强度/MPa | 黏聚力/MPa | 内摩擦角/(°) |
|---|
| 2.76 | 5 541 | 58.68 | 0.25 | 185.67 | 12.29 | 22.70 | 41.18 |
), ArticleFig(id=1322158323219153833, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=表2, caption=
普朗铜矿主要岩石力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度/(g/cm3) | 纵波速度/(m/s) | 弹性模量/GPa | 泊松比 | 单轴抗压强度/MPa | 抗拉强度/MPa | 黏聚力/MPa | 内摩擦角/(°) |
|---|
| 2.76 | 5 541 | 58.68 | 0.25 | 185.67 | 12.29 | 22.70 | 41.18 |
), ArticleFig(id=1322158323391120298, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=EN, label=Table 3, caption=
Material parameters of rock RHT model
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度 ρ0/(kg/m3) | 初始孔隙度α | 破坏面参数A | 破坏面参数N | 残余面参数Af | 残余面参数Nf | 损伤因子D1 | 损伤因子D2 | 抗压强度fc/MPa |
| 2 760 | 1.0 | 2.59 | 0.82 | 1.62 | 0.62 | 0.04 | 1.0 | 185.67 |
| 孔隙度指数NP | 弹性剪切模量/GPa | 侵蚀塑性应变 | 剪切模量减小因子 | 压缩应变率相关指数βC | 拉伸应变率相关指数βt | EOS多项式参数T1/MPa | EOS多项式参数T2/MPa | 孔隙坍塌压力Pcrush/MPa |
| 3.0 | 23.47 | 2.0 | 0.5 | 0.007 | 0.010 | 84.74 | 0.0 | 123.78 |
| 孔隙压实压力Pcomp/GPa | 最小损伤残余应变 | 拉伸体积塑性应变分数 | Hugoniot多项式系数A1/GPa | Hugoniot多项式系数A2/GPa | Hugoniot多项式系数A3/GPa | 相对抗剪强度 | 相对抗拉强度 | 洛德角相关参数Q0 |
| 6.0 | 0.012 | 0.001 | 84.74 | 103.38 | 21.72 | 0.28 | 0.07 | 0.68 |
| 洛德角相关参数B | EOS多项式参数B0 | EOS多项式参数B1 | 压缩屈服面参数 | 拉伸屈服面参数 | 破坏压缩应变率 | 破坏拉伸应变率 | 参考压缩应变率 | 参考拉伸应变率 |
| 0.05 | 1.22 | 1.22 | 0.5 | 0.7 | 3.0E25 | 3.0E25 | 3.0E-5 | 3.0E-6 |
), ArticleFig(id=1322158323500172203, tenantId=1146029695717560320, journalId=1225396423026438145, articleId=1322158313530311492, language=CN, label=表3, caption=
岩石 RHT 模型材料参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| 密度 ρ0/(kg/m3) | 初始孔隙度α | 破坏面参数A | 破坏面参数N | 残余面参数Af | 残余面参数Nf | 损伤因子D1 | 损伤因子D2 | 抗压强度fc/MPa |
| 2 760 | 1.0 | 2.59 | 0.82 | 1.62 | 0.62 | 0.04 | 1.0 | 185.67 |
| 孔隙度指数NP | 弹性剪切模量/GPa | 侵蚀塑性应变 | 剪切模量减小因子 | 压缩应变率相关指数βC | 拉伸应变率相关指数βt | EOS多项式参数T1/MPa | EOS多项式参数T2/MPa | 孔隙坍塌压力Pcrush/MPa |
| 3.0 | 23.47 | 2.0 | 0.5 | 0.007 | 0.010 | 84.74 | 0.0 | 123.78 |
| 孔隙压实压力Pcomp/GPa | 最小损伤残余应变 | 拉伸体积塑性应变分数 | Hugoniot多项式系数A1/GPa | Hugoniot多项式系数A2/GPa | Hugoniot多项式系数A3/GPa | 相对抗剪强度 | 相对抗拉强度 | 洛德角相关参数Q0 |
| 6.0 | 0.012 | 0.001 | 84.74 | 103.38 | 21.72 | 0.28 | 0.07 | 0.68 |
| 洛德角相关参数B | EOS多项式参数B0 | EOS多项式参数B1 | 压缩屈服面参数 | 拉伸屈服面参数 | 破坏压缩应变率 | 破坏拉伸应变率 | 参考压缩应变率 | 参考拉伸应变率 |
| 0.05 | 1.22 | 1.22 | 0.5 | 0.7 | 3.0E25 | 3.0E25 | 3.0E-5 | 3.0E-6 |
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